The Collaborative International Dictionary of English v.0.48:
Redbelly \Red"bel`ly\ (-b?l`l?), n. (Zool.) The char. [1913 Webster]WordNet (r) 3.0 (2006):
redbelly n 1: freshwater turtle of Chesapeake Bay tributaries having red markings on the lower shell [syn: red-bellied terrapin, red-bellied turtle, redbelly, Pseudemys rubriventris]